Added crate_universe examples to CI (#707)

* Added crate_universe examples to CI

* Update crate_universe/bootstrap.bzl

Co-authored-by: Daniel Wagner-Hall <[email protected]>

* Updated docs

* Remove crate_universe.bazelrc

* Updated attribute names

* Deleted example lockfile

Co-authored-by: Daniel Wagner-Hall <[email protected]>

.bazelci/presubmit.yml

@@ -109,7 +109,53 @@ tasks:
       # - "--linkopt=-fuse-ld=lld"
     build_targets: *default_linux_targets
     test_targets: *default_linux_targets
-
+  crate_universe_examples_ubuntu2004:
+    name: Crate Universe Examples
+    platform: ubuntu2004
+    environment:
+      RULES_RUST_CRATE_UNIVERSE_BOOTSTRAP: true
+    working_directory: examples/crate_universe
+    build_targets:
+      - "//..."
+    test_targets:
+      - "//..."
+  crate_universe_rbe_ubuntu1604:
+    name: Crate Universe Examples
+    platform: rbe_ubuntu1604
+    environment:
+      RULES_RUST_CRATE_UNIVERSE_BOOTSTRAP: true
+    working_directory: examples/crate_universe
+    build_targets:
+      - "//..."
+    test_targets:
+      - "//..."
+  crate_universe_examples_macos:
+    name: Crate Universe Examples
+    platform: macos
+    environment:
+      RULES_RUST_CRATE_UNIVERSE_BOOTSTRAP: true
+    working_directory: examples/crate_universe
+    build_targets:
+      - "//..."
+    test_targets:
+      - "//..."
+  crate_universe_examples_windows:
+    name: Crate Universe Examples
+    platform: windows
+    environment:
+      RULES_RUST_CRATE_UNIVERSE_BOOTSTRAP: true
+    working_directory: examples/crate_universe
+    crate_universe_windows_targets: &crate_universe_windows_targets
+      - "//..."
+      # TODO: There are windows specific build issues in the generated
+      # depednencies. This should be fixed and all testing enabled.
+      - "-//basic:test"
+      - "-//has_aliased_deps/..."
+      - "-//uses_proc_macro/..."
+      - "-//uses_sys_crate/..."
+    build_targets: *crate_universe_windows_targets
+    # TODO: fix test targets in `crate_universe_windows_targets`
+    # test_targets: *crate_universe_windows_targets
 buildifier:
   version: latest
   warnings: "all"

.gitignore

@@ -8,7 +8,6 @@
 /examples/bazel-*
 /examples/crate_universe/*/bazel-*
 /docs/bazel-*
-crate_universe.bazelrc
 
 # rustfmt
 *.rs.bk

WORKSPACE.bazel

@@ -34,11 +34,10 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "bazel_toolchains",
-    sha256 = "d8c2f20deb2f6143bac792d210db1a4872102d81529fe0ea3476c1696addd7ff",
-    strip_prefix = "bazel-toolchains-0.28.3",
+    sha256 = "1adf7a8e9901287c644dcf9ca08dd8d67a69df94bedbd57a841490a84dc1e9ed",
+    strip_prefix = "bazel-toolchains-5.0.0",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-toolchains/archive/0.28.3.tar.gz",
-        "https://github.com/bazelbuild/bazel-toolchains/archive/0.28.3.tar.gz",
+        "https://github.com/bazelbuild/bazel-toolchains/archive/refs/tags/v5.0.0.tar.gz",
     ],
 )
 

crate_universe/BUILD.bazel

@@ -2,8 +2,18 @@ load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 
 package(default_visibility = ["//visibility:public"])
 
+exports_files([
+    "Cargo.toml",
+    "Cargo.lock",
+])
+
 bzl_library(
     name = "rules",
     srcs = glob(["**/*.bzl"]),
     deps = ["//crate_universe/private:bzl_srcs"],
 )
+
+filegroup(
+    name = "resolver_srcs",
+    srcs = glob(["srcs/**"]),
+)

crate_universe/bootstrap.bzl

@@ -0,0 +1,103 @@
+"""A module for declaraing a repository for bootstrapping crate_universe"""
+
+load("//crate_universe/private:util.bzl", "get_host_info")
+
+BOOTSTRAP_ENV_VAR = "RULES_RUST_CRATE_UNIVERSE_BOOTSTRAP"
+
+_INSTALL_SCRIPT_CONTENT = """\
+#!/bin/bash
+
+set -euo pipefail
+
+cp "${CRATE_RESOLVER_BIN}" "$@"
+"""
+
+_BUILD_FILE_CONTENT = """\
+package(default_visibility = ["//visibility:public"])
+
+exports_files(["release/crate_universe_resolver{ext}"])
+
+sh_binary(
+    name = "install",
+    data = [
+        ":release/crate_universe_resolver{ext}",
+    ],
+    env = {{
+        "CRATE_RESOLVER_BIN": "$(execpath :release/crate_universe_resolver{ext})",
+    }},
+    srcs = ["install.sh"],
+)
+"""
+
+def _crate_universe_resolver_bootstrapping_impl(repository_ctx):
+    # no-op if there has been no request for bootstrapping
+    if BOOTSTRAP_ENV_VAR not in repository_ctx.os.environ:
+        repository_ctx.file("BUILD.bazel")
+        return
+
+    resolver_triple, toolchain_repo, extension = get_host_info(repository_ctx)
+
+    cargo_path = repository_ctx.path(Label(toolchain_repo + "//:bin/cargo" + extension))
+    rustc_path = repository_ctx.path(Label(toolchain_repo + "//:bin/rustc" + extension))
+
+    repository_dir = repository_ctx.path(".")
+    resolver_path = repository_ctx.path("release/crate_universe_resolver" + extension)
+
+    args = [
+        cargo_path,
+        "build",
+        "--release",
+        "--locked",
+        "--target-dir",
+        repository_dir,
+        "--manifest-path",
+        repository_ctx.path(repository_ctx.attr.cargo_toml),
+    ]
+
+    repository_ctx.report_progress("bootstrapping crate_universe_resolver")
+    result = repository_ctx.execute(
+        args,
+        environment = {
+            "RUSTC": str(rustc_path),
+        },
+        quiet = False,
+    )
+
+    if result.return_code != 0:
+        fail("exit_code: {}".format(
+            result.return_code,
+        ))
+
+    repository_ctx.file("install.sh", _INSTALL_SCRIPT_CONTENT)
+
+    repository_ctx.file("BUILD.bazel", _BUILD_FILE_CONTENT.format(
+        ext = extension,
+    ))
+
+_crate_universe_resolver_bootstrapping = repository_rule(
+    doc = "A rule for bootstrapping a crate_universe_resolver binary using [Cargo](https://doc.rust-lang.org/cargo/)",
+    implementation = _crate_universe_resolver_bootstrapping_impl,
+    attrs = {
+        "cargo_lockfile": attr.label(
+            doc = "The lockfile of the crate_universe resolver",
+            allow_single_file = ["Cargo.lock"],
+            default = Label("//crate_universe:Cargo.lock"),
+        ),
+        "cargo_toml": attr.label(
+            doc = "The path of the crate_universe resolver manifest (`Cargo.toml` file)",
+            allow_single_file = ["Cargo.toml"],
+            default = Label("//crate_universe:Cargo.toml"),
+        ),
+        "srcs": attr.label(
+            doc = "Souces to the crate_universe resolver",
+            allow_files = True,
+            default = Label("//crate_universe:resolver_srcs"),
+        ),
+    },
+    environ = [BOOTSTRAP_ENV_VAR],
+)
+
+def crate_universe_bootstrap():
+    _crate_universe_resolver_bootstrapping(
+        name = "rules_rust_crate_universe_bootstrap",
+    )